slander, false accusation
譛 centers on damaging someone's reputation through words: slander or false accusation.
譛 combines 言 (speech) with 替, which likely contributes the sound and may suggest replacing truth with falsehood. The exact historical development is uncertain.
Words 言 that replace 替 the truth with lies: slander and false accusation.
For シン, imagine a person spreading slander with a sharp, hissing whisper: 'shin... shin...' The sound 'shin' cues シン while the words damage a reputation.